Allow objects to have roles in groups

I am a member of a group for a club where I sell items. To build in the club you need to have a special role selected, which regular club patrons don't have. My normal system at rented vendor spots is to place an invisible object in the vendor stall, which retains the group tag and rezzes vendors with it for me (my Vendor Grouper product ) while I myself can leave the group and thus keep my precious 25 slots open.

Unfortunately when a special role is being used for build permission this doesn't work, because even if I have the group role that lets me build, my objects don't. If I was using a holovendor I wouldn't be able to use it at all.

So I'd request this as a feature: let objects inherit a group role, and its privileges, as well as just a group tag.